Mixing device for internal-combustion engines



June 21 927.

E. THORNTON P MIXING DEVICE FOR INTERNAL COMBUSTION ENGINES Filed May 25, 1925 Zlmnntm: cf azelmznl'on Patented June 21, 1927,

I "UNITED STATES PATENT LQFFI'CFE.

ELIZABETH THORNTON, or DETROIT, MICHIGAN.'

MIXING- DEVICE "FOR INTERNAL-COMBUSTION ENGINES.

Application filed May 25, 1925. Serial No. 32,598.

Asa general rulein internal combustion engines =carburetion is more or less imperfect with a consequent power loss and-this is especially so in cold Weather or when .the engine has not been running long enough to become heated, a common fault being. insufficient atomization whichresultsin a'very wet gasentering the cylinders of the engine, which gas is diflicult to explode as well as being uneven in its explosion asjis well known to those conversant with the action of explosive mixtures in internal'eombustion engines. V y

This invention therefore has as-its object the provision of simple means tending to create a greater uniformity and abetter atomized condition in the gases entering the cylinder of an internal combustion engine and to thereby increase the efficiency of opera'tionof the engine.

The invention further lies in the provision of a screen adapted to be located between the carburetor and the cylinder of an engine in such manner that particular screening effect is secured contiguous to the margins of the opening through which the intake gases pass to the cylinder and more especially the'margin contiguous to the lower part of such opening.

A further object is the provision of a gasket incorporating such a screen "and in sertable between the abutting ends of the intake pipe of an internal combustion engine and the cylinder or manifold to which the said intake pipe is connected or between the said intake pipe and the carburetor; and still further objects subsidiary to or resulting from the aforesaid objects, or from the construction or operation of the invention as it may be carried into effect, will become apparent as the said invention is hereinafter further disclosed.

In carrying the said invention into effect, I may provide a gasket adapted to be inserted between the abutting faces of an intake pipe and any of its connections, said gasket having an orifice through which intake gases may pass to thecylinder and over which orifice is extended a wire screen, the meshes of which are substantially more open towards the center and contiguous to the margins of the opening of the said gasket, the open meshed portion of the screen being also offset or eccentric relative to the opening whereby a greater expanse of the finer mesh is provided contiguous to thelower margin of the opening than to the upper margin thereof. 1 7

All of which is more particularly describedhereinafter, by way of example, having reference to the accompanying drawing, wherein. I Figure lis an elevation showing the application of'my improved-device to the connection between the carburetor and cylinder of an engine;

Figure 2'is a detail elevation of the gasket removed; u

Figure 3 is a plan of the same; Figure 4 is an elevation ofa modified form of the device;

Figure 5 is a plan, partly in section of such modified form.

Similar characters of reference indicate similar parts in the several figures of the drawings. Y

ternal combustion engine, the said intake pipe being flanged. at 4 and secured to the said cylinder by bolts 5; and between the flanged portion of the intake pipe and the said cylinder is inserted a'gasket 6 having a central orifice 7 the said gasket being of any suitable material for the purpose such for instance as a layer of asbestos 8 secured between metal strips 9 and 10 as by means of tongues 11 formed on one of the metal strips and bent over the other of the said metal strips as shown.

Carried by the said gasket and extending over the orifice thereof is a screen 12, part of which is of open mesh 13 and part of which is of closer mesh 14, the closer meshed portions being contiguous to the margins of the said orifice 7.

When intake gases are admitted to the cylinder, the less completely vaporized portions of the gas have a tendency to flow contiguous to the walls of the intake pipe and are consequently interrupted by the finer meshed portions 14- of the screen, the better vaporized. gas being admitted through the more open mesh of the screen towards the center of the orifice, and as the said poorly vaporized gas is heavier than that more completely vaporized it has a tendency to flow through the lower part of the orifice for which reason the finer mesh of the screen is extended to a greater distance from such margin than it is from the upper margin of said orifice.

.a ee t as necessitated by the 7 opening.

The arrangement in Figures 4 and 5 also provides for the movement of the screen so that it may be rendered inoperative, such as when the engine is idling, the gasket 18 in this case being in the form of a housing for a rotatable frame 19 which may be moved, in the manner of a butterfly valve, by means of an actuatingrod 20.

This invention may be developed Within the scope of the following claims without departing from the essential features of the said invention, and it is desired that the specification'and drawing be read as merely illustrative and not in a limiting sense, ex-

prior art.

Vhat I claim is V 1. A mixing device insertable between the intake pipevand cylinder of an internal com- 3t) bustion engine for the screening of wet gases entering the said cylinder, comprising a gasket having an orifice for the passage of gases therethrough, and a vertically disposed screen carrie by said gasket and extending across the orifice thereof, said scree-n being of-closer mesh adjacent the margins of said orifice than towards the center thereof, and the wider meshed portion of said screen being disposed substantially towards the upper margin ofsaid ori- 2. A mixing device insertable between the intake pipeand cylinder of an internal'combustion engine for the screening of wet gases entering the said cylinder, comprising a gasket having an orifice for the passage of gases therethrough, and a vertically disposed screen carried by said gasket and extending across the orifice thereof, said screen includlng an eccentric portion disposed towards the upper margin of said orifice of wider mesh than the surrounding marginal portion of said screen.

ture,

ELIZABETH THORNTON. V

Intestimony whereof I aifix my signa- 

